The idea is to have the water infiltrate and not stay at the surface level where the substrate is bonded. There is two feet of chipped stone below it to accept the moisture and subsequently drain into the ground.

It is experimental so we will see.

It appears to be a huge infiltration pit you can park on.

Posted on: 2012/4/29 19:08

_________________Don't hit me with them negative waves so early in the morning. Think the bridge will be there and it will be there. It's a mother, beautiful bridge, and it's gonna be there. Ok?

Eventually the park will replace most of its impervious surfaces with porous asphalt and concrete. The pores in the pavement will allow additional runoff to be absorbed into the ground and recharge the ground water. The walkways around the park will be laid with porous concrete costing $28,500. The half-mile trail and 105 space parking lot will replace the original asphalt with porous asphalt costing $55,250.

Done already near Lititz Run. This is going to be very good for that little stream. It will last a long time.

We had a recent thread on this topic not long ago - it's nearing completion or may be done by now.Link

This project was very difficult to fund/contract and has been in the works for a year in fits and starts. The eventual project did not use porous pavement for the entire lot. The main center section is conventional surfacing but the two side car parking sections are porous. We'll see how the porous sections hold up. The main concern, of course, is storm water runoff. In the near future, we will continue to construct habitat improvement in the Run itself as part of an eight phase improvement project.